Bug 750625 - Fix Coverity (11066) Unused pointer value

https://bugzilla.redhat.com/show_bug.cgi?id=750625

slapd/opshared.c (op_shared_search)

Bug Description: A pointer "normbase" returned by "slapi_sdn_get_
dn(sdn)" is never used.

Fix description: removing the line that normbase is set.

ldap/servers/slapd/opshared.c

@@ -704,7 +704,6 @@ op_shared_search (Slapi_PBlock *pb, int send_result)
             slapi_sdn_free(&sdn);
             sdn = slapi_sdn_dup(be_suffix);
             slapi_pblock_set(pb, SLAPI_SEARCH_TARGET_SDN, (void *)sdn);
-            normbase = slapi_sdn_get_dn(sdn);
           }
         }
       }